#!/bin/bash

#
# Copyright (C) 2025 KonstaKANG
#
# SPDX-License-Identifier: LGPL-2.1-or-later
#

if [ ! -d "$ANDROID_NDK_HOME" ]; then
  echo "ANDROID_NDK_HOME environment variable is not properly set!"
  exit 1
fi

TOOLS_BASE="$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin"

ARCH_CONFIG=" \
--arch=aarch64 \
--enable-cross-compile \
--target-os=android \
--cross-prefix=${TOOLS_BASE}/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android- \
--cc=${TOOLS_BASE}/aarch64-linux-android35-clang \
--cxx=${TOOLS_BASE}/aarch64-linux-android35-clang++ \
--ar=${TOOLS_BASE}/llvm-ar \
--nm=${TOOLS_BASE}/llvm-nm \
--ranlib=${TOOLS_BASE}/llvm-ranlib \
--strip=${TOOLS_BASE}/llvm-strip \
--x86asmexe=${TOOLS_BASE}/yasm"

FFMPEG_CONFIG=" \
--disable-avdevice \
--disable-debug \
--disable-doc \
--disable-filters \
--disable-programs \
--disable-static \
--enable-shared"

echo "Generating configuration..."
echo "./configure $ARCH_CONFIG $FFMPEG_CONFIG"
./configure $ARCH_CONFIG $FFMPEG_CONFIG

cat > libavutil/ffversion.h <<EOF
#ifndef AVUTIL_FFVERSION_H
#define AVUTIL_FFVERSION_H
#define FFMPEG_VERSION "$(cat RELEASE) (KonstaKANG)"
#endif /* AVUTIL_FFVERSION_H */
EOF

exit 0